// JavaScript Document
function getStyle(obj, name) 
{
	if(obj.currentStyle)
	{
		return obj.currentStyle[name];	
	}
	else
	{
		return getComputedStyle(obj, false)[name];	
	}
}
//var timer=null;

//startMove(oDiv, {width: 400,height: 400});
function startMove(obj, json, fnEnd)
{
	 clearInterval(obj.timer);
	 obj.timer=setInterval(function(){
	  
	 var  bStop=true; //假设所有的值都已经到了
	 
	 for(var attr in json)
	 {
		var cur=0;
		if(attr=='opacity')
		{
			cur=Math.round(parseFloat(getStyle(obj,attr))*100);	
		}
		else
		{
			cur=parseInt(getStyle(obj,attr));	
		}
		var speed=(json[attr]-cur)/6;
		speed=speed>0?Math.ceil(speed):Math.floor(speed);
		
		if(cur!=json[attr])
		{
			bStop=false;	
		}
		
		if(attr=='opacity')
		{
			obj.style[attr]='alpha(opacity:'+(cur+speed)+')';
			obj.style.opacity=(cur+speed)/100;	
		}
		else
		{
			obj.style[attr]=cur+speed+'px';	
		}
	 }
	 if(bStop)
	 {
		clearInterval(obj.timer);
		if(fnEnd){fnEnd()};	 
	 }
	},30);	
}